Name __________________________ Date _________________ Class ___________ Rocks ■ Review and Reinforce Igneous Rocks Understanding Main Ideas Fill in the blanks in the table below. Origin of Igneous Rock Resulting Texture Slow cooling of magma far beneath Earth’s surface 1. Extremely rapid cooling of lava in which no crystals form 2. Rapid cooling of lava in which tiny crystals form 3. Answer the following questions on a separate sheet of paper. 4. What is the most common extrusive rock? Where is it found? 5. What is the most common intrusive rock? Where is it found? 6. Explain how the silica content of molten material affects the color of igneous rocks. 7. What qualities of igneous rocks have long made them useful for tools and building materials? 8. Describe one use each for the igneous rocks granite, basalt, and pumice. Building Vocabulary Fill in the blank to complete each statement. 9. Igneous rock formed from lava that erupted onto Earth’s surface is called ___________________ rock. 10. Igneous rock formed from magma below Earth’s surface is called ___________________ rock. © Pearson Education, Inc., publishing as Pearson Prentice Hall. All rights reserved.